14. In a survey conducted in 1992 by the Wight State University School of Medicine. senior high school students were asked if they had ever used naijuana. Of the females sam- pled. 445 said yes and 675 said no: of the males sampled. 515 said yes and 641 said no. Compare and interpret these responses,

a) Using a 95% confidence interval.

b) Using a significance test.